If you see it counting up with the number of invalid frames, either the baud rate is incorrect or there is something wrong with the wiring.ħ. If you see the screen counting up with the number of packets, that’s good. (There are a few common baud rates: 19200, 38400, and 76800.) This command might look like “mstpcap.exe COM4 76800” for example. Next, in the Command Prompt, execute the mstpcap.exe using the COM port identified in Step 3 and the appropriate baud rate. Add a space, and paste the “path” to the location of your download from Steve Karg. This refers to “change directory,” and it lets you choose where the MS/TP pcap will download. Copy the “path” of your download’s location (e.g. COM4) should be listed there.Ĥ. Next, find where on your computer you downloaded Steve Karg’s BACnet Tools folder, containing the mstpcap.exe. Next, you will want to identify the COM port that the USB converter is connected to. Connect the USB converter to your computer, as well.ģ.
In the below images, the USB converter is connected to the network via the bright orange cable.Ģ. You can connect the converter to any point in your MS/TP chain, as long as it is on the MS/TP side of the router. Connect the USB converter to the MS/TP network. See this page for a n integration with Wireshark. The mstpcap.exe download from here (from Steve Karg’s BACnet tools version 0.8.6)
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